Seikei-Kakou
Online ISSN : 1883-7417
Print ISSN : 0915-4027
ISSN-L : 0915-4027
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Volume 16, Issue 12
Displaying 1-11 of 11 articles from this issue
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Index
Preface
Technical Notes : Special Issue on Structural Control in Polymer Processing
Technical Report
Report from Oversea Universities and Institutions : 67
Original Papers
  • Fundamental Study of Two Layer Molding by Simultaneous Composite Injection Molding
    Shingo Asai, Susumu Takashima, Hiroyuki Hamada
    2004 Volume 16 Issue 12 Pages 782-789
    Published: December 20, 2004
    Released on J-STAGE: November 18, 2009
    DOIhttps://doi.org/10.4325/seikeikakou.16.782
    JOURNAL FREE ACCESS
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    Two layer injection molded parts in which the top and bottom layers were composed of either different materials or of the same material but with different colors were fabricated on a simultaneous composite injection molding machine. The effects of gate shape and processing conditions such as cylinder temperature and injection rate in obtaining uniform equal thicknesses for the two layers were examined. At the gate the interface between the two layers should be maintained horizontally. Low cylinder temperatures and injection rates were found suitable, because shear flow could be generated at the interface.
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